31249995

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:141

約数の個数: 96

約数和(自身を含む): 64120896

約数和(自身を除く): 32870901

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 41, 49, 51, 61, 85, 105, 119, 123, 147, 183, 205, 245, 255, 287, 305, 357, 427, 595, 615, 697, 735, 833, 861, 915, 1037, 1281, 1435, 1785, 2009, 2091, 2135, 2499, 2501, 2989, 3111, 3485, 4165, 4305, 4879, 5185, 6027, 6405, 7259, 7503, 8967, 10045, 10455, 12495, 12505, 14637, 14945, 15555, 17507, 21777, 24395, 30135, 34153, 36295, 37515, 42517, 44835, 50813, 52521, 73185, 87535, 102459, 108885, 122549, 127551, 152439, 170765, 212585, 254065, 262605, 297619, 367647, 512295, 612745, 637755, 762195, 892857, 1488095, 1838235, 2083333, 4464285, 6249999, 10416665, 31249995]

約数ペア:

[(1, 31249995), (3, 10416665), (5, 6249999), (7, 4464285), (15, 2083333), (17, 1838235), (21, 1488095), (35, 892857), (41, 762195), (49, 637755), (51, 612745), (61, 512295), (85, 367647), (105, 297619), (119, 262605), (123, 254065), (147, 212585), (183, 170765), (205, 152439), (245, 127551), (255, 122549), (287, 108885), (305, 102459), (357, 87535), (427, 73185), (595, 52521), (615, 50813), (697, 44835), (735, 42517), (833, 37515), (861, 36295), (915, 34153), (1037, 30135), (1281, 24395), (1435, 21777), (1785, 17507), (2009, 15555), (2091, 14945), (2135, 14637), (2499, 12505), (2501, 12495), (2989, 10455), (3111, 10045), (3485, 8967), (4165, 7503), (4305, 7259), (4879, 6405), (5185, 6027)]